Originally I was thinking about the Tamron 24-70 VC. I do want an f2.8 do-it-all walk-around lens. I haven't seen many people use the Tamron 15-30 f2.8 at 30mm and f2.8. It's big, it's heavy, but I love ultrawide for walk-arounds. The performance at 30mm and f2.8 still seems very good. I am interested in the lens for the entire range, from 15mm to 30mm. I really just have two priorities in terms of what I want to add to my photography bag: An all-around f2.8 zoom lens (24-70), and a wide lens. I am envisioning two practical situations here: 1) I carry around the Tamron 15-30 and one other prime (50 or 85), and I switch lenses as needed. The downside is filters won't be easy, and I will be stuck switching lenses still. or 2) I carry around just the 24-70 f2.8 and don't switch lenses, but I don't get ultrawide. Also, quality would be lower, but it's convenient. Will I use ultrawide? Yes. Do I need ultrawide? No. Is my budget $1350 Canadian + tax? I'm far from rich, the purchase would forever be a secret. Btw the Canadian dollar is dipping, so I figure any purchase is either now or in ~1.5+ years from now (I foresee lens prices going up. I read a forecast that the dollar could dip to 60 cents to the American $1).